Cell-post construction



I. C. HARRIS. CELL POST CONSTRUCTION. APPLICATION FILED SEPT- 20. 1919.

Patented J ah. 17 1922.

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WI TNESS:

ATTORNEY.

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Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed September 269, 1919. Serial No. 325315?" construction. in storage battery cells it is common to connect the plates of one polarity to a cell post, While the plates of the opposite polarity are connected to a second cell post. Said cell posts ordinarily extend through the cover of the cell and are connected through post straps or other conductors to a circuit outside of the cell,

lVhen the storage cattery cells are used in a service wherein they are subjected t hration, as for instance, in motor cars, there is likely to be relative movement. between the cell post and the cell cover which results in the creeping of electrolyte along said of the cell. Various espedients are in use for preventing this creeping of the electrolyte along the cell posts. 'The present invention relates to iniproveinents of this nature.

An ohiect of the present invention is to provide asirople structure which is cheap eilcctually to manufacture and. which will prevent the creeps-go nit electrolyte above referred to.

A further object is to provide a simple method of sealing cell post to the cell cover which will involve little, any more trouble and expense than is in olved in the ordinary method of assemliiling storage hattery cells Without means i'or preventing creepage or the electrolyte.

Further objects will appear scription proceeds. V

Figure- 1 is a sectional View of a cell illustrating the present invention.

Figure 2 is a detail.

The walls 01- a storage battery cell arcindicated by the numeral 1; The storage battery cell is provided with a cover 2 which may be provided with a filling aperture fl. The details oi the structure of the cover as regards the filling aperture torrn no part of the present invention and need not he described herein. The cover 92- will ordinarily be tightly sealed to the Walls 1 by means of scaling compound 41-.

as the dei'liagara and nted new andv A pair of cell posts 5, 5 are illustrated, which extend through the cover 2. The cover 5:, may bereinforced at the regions through which the cell posts extend, as illustrated by the bosses G, S'ivhich extend downwardly from the uirder side of the cover and surround the posts 5, o. The cell posts are connected to a circuit outside of the cell by means of the straps 7, 7. The straps 7 7 are, in the ordinary practice of assembling storagi battery cells, united to the posts 5, 5 by a paddling or hurningprocess, the posts and the straps being ordinarily composed of readily fusible metal as, for in-' stance, lead or alloy, or compound thereof.

According to the present invention, a recess is provided between each strap 7 and the cover 2, said recess surrounding the post 5. Both the strap 7 and the cover 2 may be slightly dished or recessechto provide an annular space, or one only of these members need he recessed. This recess is 'filled by an annular member 8 of sealing material or compound, illustrated in plan View in Fig.

2. The sealing compound may be any of the well known varieties. It is only neccs- Iary that said compound will fuse when heated to few degrees higher than the temperature encountered in storage battery practice.

In assembling the cell, a strap 7 is mounted over a post 5 with the annular memher 8 of scaling compound between the strap 7 and the cover 2 and surrounding the post 5. 'lhe strap 7 is united to thepost 5 by burning or puddling, l he heat required for his paddling process will fuse the annular member 8 of sealing compound. whereby said sealing compound will flow into intimate contact with both the post 5 and the cover 9 2. Upon cooling, the sealing compound 8 will form an eiilective seal between said post and the cover, whereby to prevent the creepage of electrolyte thcrebetween. It will not be necessary to provide a perfect fit between the bore of the boss 6 and the post 5 for the reason that the heatcomrnunicated to "the post will not extend suiiiciently far down the post to keep the compound 8 iii/liquid condition, if the compound 8 should have atendency to run down the post. The construction and method of assembling are simple and do not require accuracy of workmanship. 'l urthcrmore, the seal between the post and cover is quite effective.

Many modifications will occur to those skilled in the art. It is intended in this patcut to cover all such modifications that come Within the scope of the invention as defined by the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States, is'- 1. In combination, a cell cover a celLpost extending therethrough, and a connecting strap, said cover and strap being recessed to form .an annular space surrounding said post.

2. In combination: a cell cover, a cell post extending thercthrough, and connecting strap, said cover and strap being recessed to form an annular space surrounding said post said space being.- fillc'd with sealing 1 compound.

3. The method of sealing a cell post to a cell cover which consists of providinga cell post, a cell cover and a strap with an an nular space between said strap and said cover surrounding said post, mounting an annular ring); of sealing compound in said recess and fusing said compound.

4. The method of sealing a cell post to a cell cover which consists of providing a cell i sosoes L post. :1 cell cover and a go i an nuiar space 2J-iTW9ll said strap and cover surrounding said post I! annular ring oi sealii compound in recess and fusing said to so d-,1) with a sufficient amount of heat to fuse i compounlil,

in coinoination, a ccll' cover, cell A extending therethrough and a strap, said cover and strap forming lObmC them an annular space surrounding is, post.

(3. in combination, a cell cover, a cell post c skiingtoeretlnoug'li, and a conneotin strap, said cover and strap being recessed form an annular space surrounding said post, said space being filled with sealing compound.

7. Cell construction lia'ing, in combination, a cell cover, a post extending there through, a strap united "to said post, and an annular member of scaling compound be tween said strap and said cover intimately united to said post and said cover.

In Witness whereof, if have here into subscribcd my name,

JGEHUA C. HARRIS.

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